go-sqlite/testdata/tcl/sort2.test

# 2014 March 25.
#
# The author disclaims copyright to this source code.  In place of
# a legal notice, here is a blessing:
#
#    May you do good and not evil.
#    May you find forgiveness for yourself and forgive others.
#    May you share freely, never taking more than you give.
#
#***********************************************************************
# This file implements regression tests for SQLite library. 
#
# Specifically, the tests in this file attempt to verify that 
# multi-threaded sorting works.
#

set testdir [file dirname $argv0]
source $testdir/tester.tcl
set testprefix sort2
db close
sqlite3_shutdown
sqlite3_config_pmasz 10
sqlite3_initialize
sqlite3 db test.db

foreach {tn script} {
  1 { }
  2 {
    catch { db close }
    reset_db
    catch { db eval {PRAGMA threads=7} }
  }
} {
  eval $script

  do_execsql_test $tn.1 {
    PRAGMA cache_size = 5;
    WITH r(x,y) AS (
      SELECT 1, randomblob(100)
      UNION ALL
      SELECT x+1, randomblob(100) FROM r
      LIMIT 100000
    )
    SELECT count(x), length(y) FROM r GROUP BY (x%5)
  } {
    20000 100 20000 100 20000 100 20000 100 20000 100
  }

  do_execsql_test $tn.2.1 {
    CREATE TABLE t1(a, b);
    WITH r(x,y) AS (
      SELECT 1, randomblob(100)
      UNION ALL
      SELECT x+1, randomblob(100) FROM r
      LIMIT 10000
    ) INSERT INTO t1 SELECT * FROM r;
  }
  
  do_execsql_test $tn.2.2 {
    CREATE UNIQUE INDEX i1 ON t1(b, a);
  }
  
  do_execsql_test $tn.2.3 {
    CREATE UNIQUE INDEX i2 ON t1(a);
  }
  
  do_execsql_test $tn.2.4 { PRAGMA integrity_check } {ok}
  
  # Because it uses so much data, this test can take 12-13 seconds even on
  # a modern workstation. So it is omitted from "veryquick" and other
  # permutations.test tests.
  if {[isquick]==0} {
    do_execsql_test $tn.3 {
      PRAGMA cache_size = 5;
      WITH r(x,y) AS (
          SELECT 1, randomblob(100)
          UNION ALL
          SELECT x+1, randomblob(100) FROM r
          LIMIT 1000000
          )
        SELECT count(x), length(y) FROM r GROUP BY (x%5)
    } {
      200000 100 200000 100 200000 100 200000 100 200000 100
    }
  }
}

finish_test